Draft rigging



Patented Dec. 26, was.

away, 9'

it t th \VILLIADI KELSO, OF PITTSBURGH; PENNSYLVANIA, ASSIG'NOR ro' rrrn-igrqconwny &'

ronLnY COMPANY, or PITTS URGH-, l nnnsrnyenrn, A; conrona rrron or PEN SYLVANIA.

Application filed'iOctOber as,

T allcoiwm c'tmay concern: 7

Be it known that I, WILLIA lxnnso, a citizen of the United States, residing at Pittsburglninthe county of Allegheny. and State of Pennsylvania, have invented cer-- tain new and useful improvements 111 Draft Rigging; andl do-hereby declare the following to be a full, clear, and exact description of theinvention, such aswill enable others skilledin the art to which it appertains to make and use the-same.

My invention relates to the constructionof' draft rigging for railway cars andisparticularly directedito the production of1siin.--

ple, strong and durable means for pivotally connecting. the car coupler to the draft yoke of the mechanism. Generally stated, this object is accomplished byprovidingthe rear end or butt of the coupler with oppositely extendingdiner. blockshaving front and rear concentric segmental cylindrical faces conforming to correspondingly curvedfaces" on the interior of; the draft yoke atiitsforward' end, the draft yoke. having a-lateral opening which is of. less Width than the diametric distance between the curved faces of the liner blocks but which is sufficiently wide. to permit the passage of'the liner blocksafter the couplerand yoke have been brought to an angular position with. respect' to each other in the act of assembling or disconnecting the parts.

In thedrawings illustrating the preferred form in which I contemplate applying the principle of my inventiomthescope whereof is pointed out in the claims,

Figure 1: is a side elevation of a draft yoke and car coupler constructed in accordance with my invention, thecoupler head and a portionof the coupler! shank being omitted,

Figure 2v is detailsectional view on the line 22,j Figure 1.

Figure 3 is a detail sectional view onthe line 33, Figure 1. I

Figure etis a detailiview showing-the forward end of the draft yoke iirvertical central section and the rear end ofthe coupler in side elevation. c

Figure?) is a front elevation of thedraft yoke.

In the drawings, 1 indicates the. car coupler and 2 is the draft yoke of the draft rigging. As the head of the car coupler forms no part of this invention its details of construction are immaterial and may be of any DRAFT RIGGING;

1919; Serial No. 332,556.

well'known or desired charact'en 'llhe drafti.

blocks a constituting; pivot lugs; or trunnions; for p votally and interlockingly; connecting the coupler. to the yoke 2; Theafront; and? rearfaces of the liner'blocks are concen. tricallycunved; and of convex. segmental; form, while their-lateral-= faces 5 are prefer ably flat and parallel, so that: the lengthofsaid liner blocks longitudinally ofthe con pler exceeds theirv transverse width. The curved. rear faces f theliner. blocks togethen with the interveningcurved rear end 7 ofthecouplenshank preferably, constitute a continuous cylindricalbearing surface for transmitting buffing: shocks from the' con plen 1 tothe draft yoke 2., The curved, for

wardiface ofeachdiner block diis preferably stepped or shouldered. at its outerqend to form segmental lugs 8' which; project for;-

wardly beyond the curved; surfaces Q-that are adj acent: the shank of the coupler.

The'forward end of the draft yoke Zand the rear end or butt of the coupler are interlockingly connected;

ject inwardly toward the shank: of; the coupler and between which the coupler shank extends. The rear. orinterior. surfaces of these lugs are cylindrically curvedtocor-rcspend to the forward faces of the linerblocks a, being stepped or shouldered to provide rearwardly extending lugsll which are in aliuement with the curved faces 9 ofthe liner blocks and which over-lap thecorrespending segmentallugsSon the latter, and

being formed with culwedsur-faces l? mating with the forward faces of the corre-:

sponding lugs 8 of the liner blocks.

Spreading or separation of the forward ends of the arms 3 of theyoke, which is re- To; effect this in. an, eflicient manner. the draft. yokeis provided at itsforward end withmlugs 10 which pro each other.

sisted by the overlapping segmental. lugs S and 11, is also resisted by a transversely extending tie or web 13 which separates the coupler butt receiving pocket of the yoke from the opening between the yoke arms for the reception of the cushioning unit (not shown) of the draft rigging; and as a means for still further overcoming the spreading of the yoke arms 3 the latter are preferably integrally connected at their forward ends by a tie or wall 1 iextending forwardly from the tie 13 and closing one side of the coupler receiving recess of the yoke and integrally uniting the pulling lugs 10 of the yoke 2. The forward face 15 of the transverse tie member 13 is concavely curved cylindrically to correspond to the convex cur vature of the rear end of the coupler butt, an extended bearing surface for receiving bulling shocks in any angular position which the coupler and yoke may assume in service being thus afforded. The side wall 14% preferably diverges forwardly from the longitudinal axis ofthe yoke so as not to interfere with extended lateral swinging or pivotal movement of the coupler.

To enable the coupler and yoke to be brought into assembled relation the yoke is provided in advance ofthe tie member 13 thereof with a side opening 16 communicating with the recess or pocket of the yoke in which the butt of the coupler 1 is located when the parts are in assembled relation. The opening 16, which extends forwardly between the pulling lugs 10 so as to receive and allow for lateral swinging of the shank of the coupler 1, is of sufficient height to permit the passage of the liner blocks'' of the coupler, but its width is such that the liner blocks may not pass therethrough until the coupler and yoke are at right angles to When so positioned the liner blocks 4, which are of less width than length,

may be entered through the opening 16,

may be rotated to In disassemter which the coupler 1 normal operating posititon.

bling the parts the above described operation is reversed, that is to say, the coupler and yoke are turned until they are at right angles to each other and then are disconnected. It will be observed that the liner blocks 4 are so proportioned as to prevent any chance of their escape from the yoke when in serv ice position.

I claim:

1. In a draft rigging, the combination of a coupler and a draft yoke detachably and pivotally connected thereto, said coupler having oppositely disposed liner blocks provided'with concentric convexly curved frontand rear faces, and saidyoke having arms adapted to receive a cushioning unit between them and having at its forward end pulling lugs provided with curved faces adapted to engage saidcurved front faces of said liner blocks and having a transversely extending tie spaced rearwardly from said pulling lugs and connecting said arms and adapted to engage said curved rear faces of said liner blocks and having a wall extending forwardly from said transversely extending tie and rigidly connected to said arms and said pulling lugs.

2. In a draft rigging, the combination of a coupler and a yoke pivotally united thereto, said yoke having pulling lugs the posterior faces of which are stepped and concavely curved, an integral transverse tie-bar having its forward face concavely curved, and an integral side-wall which integrally connects said pulling'lugs and tie-bansaid coupler having oppositely disposed linerblocks of greater longitudinal length than transverse width, "the pulling faces of said liner-blocks being formed with undercut stepped convexly curved surfaces corresponding to the pulling lugs of the yoke.

3. in a draft rigging, the combination of a coupler and a yoke pivotally united thereto, the yoke having its arms connected by an integral transverse tie-bar and having in advance of said tie-loar an integral tie-wall closing'one side of the yoke, and having at its frontpulling lugs the rear faces of which are rabbeted and concavely curved, and the coupler having oppositely disposed segmental liner-blocks of greater longitudinal length than transverse width, the forward fa ces of said linenblocks being undercut and. convexly curved to conform to the rear faces of the pulling lugs of the yoke.

41-. In a draft rigging, the combination of a coupler and a yoke pivotally united thereto, said yoke having its arms connected by an'integral tranvserse tie-bar having a concavely curved anterior face, and having in advance of said tie-bar an integral tie wall closing one side of the yoke, said yoke at its front end having pulling lugs the rear faces of which are rabheted and concavely curved concentric with said curved face of the transverse tie-bar, and the coupler having oppositely disposed segmental liner-blocks of g eaterlongitudinal length than transverse width, the forward faces of said liner-blocks being undercut and convexly curved to conform to the rear faces of the pulling lugs of the re; and the rear faces of said linerblocls being ciiirved to conform to the front face of the transverse tie-bar of the yoke.

in testimony whereof I ailix my signatinc.

WILLIAM KEUKO. 

